Method of preparing copper-dendritic composite alloys for mechanical reduction

Verhoeven, John D; Gibson, Edwin D; Schmidt, Frederick A; Spitzig, William A

Title: Method of preparing copper-dendritic composite alloys for mechanical reduction

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Abstract

Copper-dendritic composite alloys are prepared for mechanical reduction to increase tensile strength by dispersing molten droplets of the composite alloy into an inert gas; solidifying the droplets in the form of minute spheres or platelets; and compacting a mass of the spheres or platelets into an integrated body. The spheres preferably have diameters of from 50 to 2000 .mu.m, and the platelets thicknesses of 100 to 2000 .mu.m. The resulting spheres or platelets will contain ultra-fine dendrites which produce higher strengths on mechanical reduction of the bodies formed therefrom, or comparable strengths at lower reduction values. The method is applicable to alloys of copper with vanadium, niobium, tantalum, chromium, molybdenum, tungsten, iron and cobalt.

Inventors:

Verhoeven, John D ^[1]; Gibson, Edwin D ^[1]; Schmidt, Frederick A ^[1]; Spitzig, William A ^[1]

Ames, IA

Issue Date:: 1988-01-01

Research Org.:: Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States)

OSTI Identifier:: 866716

Patent Number(s):: 4770718

Assignee:: Iowa State University Research Foundation, Inc. (Ames, IA)

Patent Classifications (CPCs):: B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER

C - CHEMISTRY C23 - COATING METALLIC MATERIAL C23C - COATING METALLIC MATERIAL

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B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER
B22F1/0055 - {Flake form powders}
B22F9/082 - {atomising using a fluid
B22F1/0007 - {Metallic powder characterised by its shape or structure, e.g. fibre structure}
B22F3/16 - in successive or repeated steps

C - CHEMISTRY C23 - COATING METALLIC MATERIAL C23C - COATING METALLIC MATERIAL
C23C4/123 - Spraying molten metal

B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER
B22F3/115 - by spraying molten metal, i.e. spray sintering, spray casting

C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS
C22C1/0425 - {Copper-based alloys}

B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER
B22F9/14 - using electric discharge
B22F2998/00 - Supplementary information concerning processes or compositions relating to powder metallurgy

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
Y10T29/49982 - Coating

B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER
B22F2998/10 - Processes characterised by the sequence of their steps

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DOE Contract Number:: W-7405-ENG-82

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: method; preparing; copper-dendritic; composite; alloys; mechanical; reduction; prepared; increase; tensile; strength; dispersing; molten; droplets; alloy; inert; gas; solidifying; form; minute; spheres; platelets; compacting; mass; integrated; preferably; diameters; 50; 2000; thicknesses; 100; resulting; contain; ultra-fine; dendrites; produce; strengths; bodies; formed; therefrom; comparable; values; applicable; copper; vanadium; niobium; tantalum; chromium; molybdenum; tungsten; iron; cobalt; formed therefrom; mechanical reduction; inert gas; tensile strength; molten droplets; composite alloys; composite alloy; spheres preferably; dispersing molten; copper-dendritic composite; /75/29/264/419/

Citation Formats


                    Verhoeven, John D, Gibson, Edwin D, Schmidt, Frederick A, and Spitzig, William A. Method of preparing copper-dendritic composite alloys for mechanical reduction.  United States: N. p., 1988. 
        Web.

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                    Verhoeven, John D, Gibson, Edwin D, Schmidt, Frederick A, & Spitzig, William A. Method of preparing copper-dendritic composite alloys for mechanical reduction.  United States.

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                    Verhoeven, John D, Gibson, Edwin D, Schmidt, Frederick A, and Spitzig, William A. Fri .  
        "Method of preparing copper-dendritic composite alloys for mechanical reduction".  United States.  https://www.osti.gov/servlets/purl/866716.

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@article{osti_866716,

  title        = {Method of preparing copper-dendritic composite alloys for mechanical reduction},

  author       = {Verhoeven, John D and Gibson, Edwin D and Schmidt, Frederick A and Spitzig, William A},

  abstractNote = {Copper-dendritic composite alloys are prepared for mechanical reduction to increase tensile strength by dispersing molten droplets of the composite alloy into an inert gas; solidifying the droplets in the form of minute spheres or platelets; and compacting a mass of the spheres or platelets into an integrated body. The spheres preferably have diameters of from 50 to 2000 .mu.m, and the platelets thicknesses of 100 to 2000 .mu.m. The resulting spheres or platelets will contain ultra-fine dendrites which produce higher strengths on mechanical reduction of the bodies formed therefrom, or comparable strengths at lower reduction values. The method is applicable to alloys of copper with vanadium, niobium, tantalum, chromium, molybdenum, tungsten, iron and cobalt.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1988},

  month        = {1}

}

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